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Alústiza JM, Emparanza JI, Castiella A, Casado A, Garrido A, Aldazábal P, San Vicente M, Garcia N, Asensio AB, Banales J, Salvador E, Moyua A, Arozena X, Zarco M, Jauregui L, Vicente O. Measurement of liver iron concentration by MRI is reproducible. Biomed Res Int 2015; 2015:294024. [PMID: 25874207 PMCID: PMC4385637 DOI: 10.1155/2015/294024] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/22/2014] [Accepted: 09/14/2014] [Indexed: 02/08/2023]
Abstract
PURPOSE The objectives were (i) construction of a phantom to reproduce the behavior of iron overload in the liver by MRI and (ii) assessment of the variability of a previously validated method to quantify liver iron concentration between different MRI devices using the phantom and patients. MATERIALS AND METHODS A phantom reproducing the liver/muscle ratios of two patients with intermediate and high iron overload. Nine patients with different levels of iron overload were studied in 4 multivendor devices and 8 of them were studied twice in the machine where the model was developed. The phantom was analysed in the same equipment and 14 times in the reference machine. RESULTS FeCl3 solutions containing 0.3, 0.5, 0.6, and 1.2 mg Fe/mL were chosen to generate the phantom. The average of the intramachine variability for patients was 10% and for the intermachines 8%. For the phantom the intramachine coefficient of variation was always below 0.1 and the average of intermachine variability was 10% for moderate and 5% for high iron overload. CONCLUSION The phantom reproduces the behavior of patients with moderate or high iron overload. The proposed method of calculating liver iron concentration is reproducible in several different 1.5 T systems.
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Affiliation(s)
- José María Alústiza
- 1Osatek, Donostia Universitary Hospital, P. Dr. Beguiristain 109, 20014 Donostia/San Sebastián, Spain
- *José María Alústiza:
| | - José I. Emparanza
- 2Clinical Epidemiology, Donostia Universitary Hospital, P. Dr. Beguiristain 117, 20080 Donostia/San Sebastián, Spain
| | - Agustín Castiella
- 3Gastroenterology, Mendaro Hospital, Mendarozabal s/n, Mendaro, Spain
| | - Alfonso Casado
- 4Basque Country University, Avenida Tolosa 54, 20018 Donostia/San Sebastián, Spain
| | - Adolfo Garrido
- 5Biochemical Laboratory, Donostia Universitary Hospital, P. Dr. Beguiristain 117, 20080 Donostia/San Sebastián, Spain
| | - Pablo Aldazábal
- 6Experimental Department, Donostia Universitary Hospital, P. Dr. Beguiristain 117, 20080 Donostia/San Sebastián, Spain
| | - Manuel San Vicente
- 1Osatek, Donostia Universitary Hospital, P. Dr. Beguiristain 109, 20014 Donostia/San Sebastián, Spain
| | - Nerea Garcia
- 6Experimental Department, Donostia Universitary Hospital, P. Dr. Beguiristain 117, 20080 Donostia/San Sebastián, Spain
| | - Ana Belén Asensio
- 6Experimental Department, Donostia Universitary Hospital, P. Dr. Beguiristain 117, 20080 Donostia/San Sebastián, Spain
| | - Jesús Banales
- 7Liver Diseases Unit, Biodonostia Research Institute, P. Dr. Beguiristain s/n, 20014 Donostia/San Sebastián, Spain
| | - Emma Salvador
- 1Osatek, Donostia Universitary Hospital, P. Dr. Beguiristain 109, 20014 Donostia/San Sebastián, Spain
| | - Aranzazu Moyua
- 8Policlínica Gipúzkoa, Paseo Miramón 174, 20014 Donostia/San Sebastián, Spain
| | - Xabier Arozena
- 9Radiology, Quirón Donostia Hospital, Alkolea Parkea 7, 20012 Donostia/San Sebastián, Spain
| | - Miguel Zarco
- 9Radiology, Quirón Donostia Hospital, Alkolea Parkea 7, 20012 Donostia/San Sebastián, Spain
| | - Lourdes Jauregui
- 10Onkologikoa, P. Dr. Beguiristain s/n, 20011 Donostia/San Sebastián, Spain
| | - Ohiana Vicente
- 10Onkologikoa, P. Dr. Beguiristain s/n, 20011 Donostia/San Sebastián, Spain
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Houang MT, Arozena X, Skalicka A, Huehns ER, Shaw DG. Correlation between computed tomographic values and liver iron content in thalassaemia major with iron overload. Lancet 1979; 1:1322-3. [PMID: 87781 DOI: 10.1016/s0140-6736(79)91952-4] [Citation(s) in RCA: 41] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Computer tomographic (CT) scans of the liver were obtained in six thalassaemic patients with iron overload confirmed by liver biopsy. Mean CT values for the liver in individual patients were linearly related to the iron content estimated by liver biopsy (correlation coefficient = 0.995).
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